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when I run pip install pyscipopt I get the following error:

 build\lib.win32-3.7\pyscipopt\scip.cp37-win32.pyd : fatal error LNK1120: 311 unresolved externals
    error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x86\\link.exe' failed with exit status 1120

    ----------------------------------------
Command "c:\users\mwars\appdata\local\programs\python\python37-32\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\mwars\\AppData\\Local\\Temp\\pip-install-wsiojhnh\\pyscipopt\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\mwars\AppData\Local\Temp\pip-record-xtl04q1v\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\mwars\AppData\Local\Temp\pip-install-wsiojhnh\pyscipopt\

I set the SCIPOPTDIR and I added ScipOptSuite\bin to my PATH var

mattmilten
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Michael Grant Warshowsky
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    Can you execute ```scip``` on the command line? This way you can check whether the ```PATH``` is set correctly. What are the 311 unresolved externals? Did you install the latest SCIPOptSuite 6.0.1? – mattmilten Feb 15 '19 at 09:08
  • Also, I very much recommend to use Anaconda on Windows: https://www.anaconda.com/distribution/ – mattmilten Feb 15 '19 at 09:11
  • @mattmilten I did download it and I get this error when I try to install with it not pip – Michael Grant Warshowsky Feb 15 '19 at 17:07
  • `Solving environment: failed CondaHTTPError: HTTP 000 CONNECTION FAILED for url Elapsed: - An HTTP error occurred when trying to retrieve this URL. HTTP errors are often intermittent, and a simple retry will get you on your way. If your current network has https://www.anaconda.com blocked, please file a support request with your network engineering team.` – Michael Grant Warshowsky Feb 15 '19 at 17:08
  • `SSLError(MaxRetryError('HTTPSConnectionPool(host=\'repo.anaconda.com\', port=443): Max retries exceeded with url: /pkgs/free/win-64/repodata.json.bz2 (Caused by SSLError("Can\'t connect to HTTPS URL because the SSL module is not available."))'))` – Michael Grant Warshowsky Feb 15 '19 at 17:08
  • @mattmilten this is a link to the full pip error https://pastebin.com/0BPhvujK – Michael Grant Warshowsky Feb 15 '19 at 18:35
  • Please create a clean conda environment and install PySCIPOpt there. I just tried it and it worked fine. Also, you still need to run `pip install pyscipopt` - just within a virtual environment. – mattmilten Feb 15 '19 at 18:55
  • @mattmilten I tried to make an clean conda environment here's what happened https://pastebin.com/Twe6qeAS – Michael Grant Warshowsky Feb 15 '19 at 19:07
  • Well, this seems to be a bigger issue, that is not connected to PySCIPOpt. – mattmilten Feb 15 '19 at 19:28
  • you have linker error [LNK2001](https://learn.microsoft.com/en-us/cpp/error-messages/tool-errors/linker-tools-error-lnk2001?view=msvc-170) – JeeyCi Aug 01 '23 at 16:28

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